//图片上传预览    IE是用了滤镜。
		function previewImage(file)
		{
		  var MAXWIDTH  = 50; 
		  var MAXHEIGHT = 50;
		  var div = document.getElementById('preview');
		  if (file.files && file.files[0])
		  {
			  div.innerHTML ='<img id=imghead onclick=$("#previewImg").click()>';
			  var img = document.getElementById('imghead');
			  img.onload = function(){
				var rect = clacImgZoomParam(MAXWIDTH, MAXHEIGHT, img.offsetWidth, img.offsetHeight);
				img.width  =  rect.width;
				img.height =  rect.height;
	//                 img.style.marginLeft = rect.left+'px';
				img.style.marginTop = rect.top+'px';
			  }
			  var reader = new FileReader();
			  reader.onload = function(evt){img.src = evt.target.result;}
			  reader.readAsDataURL(file.files[0]);
		  }
		  else //兼容IE
		  {
			var sFilter='filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale,src="';
			file.select();
			var src = document.selection.createRange().text;
			div.innerHTML = '<img id=imghead>';
			var img = document.getElementById('imghead');
			img.filters.item('DXImageTransform.Microsoft.AlphaImageLoader').src = src;
			var rect = clacImgZoomParam(MAXWIDTH, MAXHEIGHT, img.offsetWidth, img.offsetHeight);
			status =('rect:'+rect.top+','+rect.left+','+rect.width+','+rect.height);
			div.innerHTML = "<div id=divhead style='width:"+rect.width+"px;height:"+rect.height+"px;margin-top:"+rect.top+"px;"+sFilter+src+"\"'></div>";
		  }
		}
		function clacImgZoomParam( maxWidth, maxHeight, width, height ){
			var param = {top:0, left:0, width:width, height:height};
			if( width>maxWidth || height>maxHeight ){
				rateWidth = width / maxWidth;
				rateHeight = height / maxHeight;

				if( rateWidth > rateHeight ){
					param.width =  maxWidth;
					param.height = Math.round(height / rateWidth);
				}else{
					param.width = Math.round(width / rateHeight);
					param.height = maxHeight;
				}
			}
			param.left = Math.round((maxWidth - param.width) / 2);
			param.top = Math.round((maxHeight - param.height) / 2);
			return param;
		}




		//图片上传预览    IE是用了滤镜。
		function previewImage1(file)
		{
		  var MAXWIDTH  = 50; 
		  var MAXHEIGHT = 50;
		  var div = document.getElementById('preview1');
		  if (file.files && file.files[0])
		  {
			  div.innerHTML ='<img id=imghead1 onclick=$("#previewImg1").click()>';
			  var img = document.getElementById('imghead1');
			  img.onload = function(){
				var rect = clacImgZoomParam(MAXWIDTH, MAXHEIGHT, img.offsetWidth, img.offsetHeight);
				img.width  =  rect.width;
				img.height =  rect.height;
	//                 img.style.marginLeft = rect.left+'px';
				img.style.marginTop = rect.top+'px';
			  }
			  var reader = new FileReader();
			  reader.onload = function(evt){img.src = evt.target.result;}
			  reader.readAsDataURL(file.files[0]);
		  }
		  else //兼容IE
		  {
			var sFilter='filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale,src="';
			file.select();
			var src = document.selection.createRange().text;
			div.innerHTML = '<img id=imghead1>';
			var img = document.getElementById('imghead1');
			img.filters.item('DXImageTransform.Microsoft.AlphaImageLoader').src = src;
			var rect = clacImgZoomParam(MAXWIDTH, MAXHEIGHT, img.offsetWidth, img.offsetHeight);
			status =('rect:'+rect.top+','+rect.left+','+rect.width+','+rect.height);
			div.innerHTML = "<div id=divhead style='width:"+rect.width+"px;height:"+rect.height+"px;margin-top:"+rect.top+"px;"+sFilter+src+"\"'></div>";
		  }
		}
		function clacImgZoomParam( maxWidth, maxHeight, width, height ){
			var param = {top:0, left:0, width:width, height:height};
			if( width>maxWidth || height>maxHeight ){
				rateWidth = width / maxWidth;
				rateHeight = height / maxHeight;

				if( rateWidth > rateHeight ){
					param.width =  maxWidth;
					param.height = Math.round(height / rateWidth);
				}else{
					param.width = Math.round(width / rateHeight);
					param.height = maxHeight;
				}
			}
			param.left = Math.round((maxWidth - param.width) / 2);
			param.top = Math.round((maxHeight - param.height) / 2);
			return param;
		}









		 //图片上传预览    IE是用了滤镜。
		function previewImage2(file)
		{
		  var MAXWIDTH  = 50; 
		  var MAXHEIGHT = 50;
		  var div = document.getElementById('preview2');
		  if (file.files && file.files[0])
		  {
			  div.innerHTML ='<img id=imghead2 onclick=$("#previewImg2").click()>';
			  var img = document.getElementById('imghead2');
			  img.onload = function(){
				var rect = clacImgZoomParam(MAXWIDTH, MAXHEIGHT, img.offsetWidth, img.offsetHeight);
				img.width  =  rect.width;
				img.height =  rect.height;
	//                 img.style.marginLeft = rect.left+'px';
				img.style.marginTop = rect.top+'px';
			  }
			  var reader = new FileReader();
			  reader.onload = function(evt){img.src = evt.target.result;}
			  reader.readAsDataURL(file.files[0]);
		  }
		  else //兼容IE
		  {
			var sFilter='filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale,src="';
			file.select();
			var src = document.selection.createRange().text;
			div.innerHTML = '<img id=imghead2>';
			var img = document.getElementById('imghead2');
			img.filters.item('DXImageTransform.Microsoft.AlphaImageLoader').src = src;
			var rect = clacImgZoomParam(MAXWIDTH, MAXHEIGHT, img.offsetWidth, img.offsetHeight);
			status =('rect:'+rect.top+','+rect.left+','+rect.width+','+rect.height);
			div.innerHTML = "<div id=divhead style='width:"+rect.width+"px;height:"+rect.height+"px;margin-top:"+rect.top+"px;"+sFilter+src+"\"'></div>";
		  }
		}
		function clacImgZoomParam( maxWidth, maxHeight, width, height ){
			var param = {top:0, left:0, width:width, height:height};
			if( width>maxWidth || height>maxHeight ){
				rateWidth = width / maxWidth;
				rateHeight = height / maxHeight;

				if( rateWidth > rateHeight ){
					param.width =  maxWidth;
					param.height = Math.round(height / rateWidth);
				}else{
					param.width = Math.round(width / rateHeight);
					param.height = maxHeight;
				}
			}
			param.left = Math.round((maxWidth - param.width) / 2);
			param.top = Math.round((maxHeight - param.height) / 2);
			return param;
		}






		//图片上传预览    IE是用了滤镜。
		function previewImage3(file)
		{
		  var MAXWIDTH  = 50; 
		  var MAXHEIGHT = 50;
		  var div = document.getElementById('preview3');
		  if (file.files && file.files[0])
		  {
			  div.innerHTML ='<img id=imghead3 onclick=$("#previewImg3").click()>';
			  var img = document.getElementById('imghead3');
			  img.onload = function(){
				var rect = clacImgZoomParam(MAXWIDTH, MAXHEIGHT, img.offsetWidth, img.offsetHeight);
				img.width  =  rect.width;
				img.height =  rect.height;
	//                 img.style.marginLeft = rect.left+'px';
				img.style.marginTop = rect.top+'px';
			  }
			  var reader = new FileReader();
			  reader.onload = function(evt){img.src = evt.target.result;}
			  reader.readAsDataURL(file.files[0]);
		  }
		  else //兼容IE
		  {
			var sFilter='filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale,src="';
			file.select();
			var src = document.selection.createRange().text;
			div.innerHTML = '<img id=imghead3>';
			var img = document.getElementById('imghead3');
			img.filters.item('DXImageTransform.Microsoft.AlphaImageLoader').src = src;
			var rect = clacImgZoomParam(MAXWIDTH, MAXHEIGHT, img.offsetWidth, img.offsetHeight);
			status =('rect:'+rect.top+','+rect.left+','+rect.width+','+rect.height);
			div.innerHTML = "<div id=divhead style='width:"+rect.width+"px;height:"+rect.height+"px;margin-top:"+rect.top+"px;"+sFilter+src+"\"'></div>";
		  }
		}
		function clacImgZoomParam( maxWidth, maxHeight, width, height ){
			var param = {top:0, left:0, width:width, height:height};
			if( width>maxWidth || height>maxHeight ){
				rateWidth = width / maxWidth;
				rateHeight = height / maxHeight;

				if( rateWidth > rateHeight ){
					param.width =  maxWidth;
					param.height = Math.round(height / rateWidth);
				}else{
					param.width = Math.round(width / rateHeight);
					param.height = maxHeight;
				}
			}
			param.left = Math.round((maxWidth - param.width) / 2);
			param.top = Math.round((maxHeight - param.height) / 2);
			return param;
		}



		 //图片上传预览    IE是用了滤镜。
		function previewImage4(file)
		{
		  var MAXWIDTH  = 50; 
		  var MAXHEIGHT = 50;
		  var div = document.getElementById('preview4');
		  if (file.files && file.files[0])
		  {
			  div.innerHTML ='<img id=imghead4 onclick=$("#previewImg4).click()>';
			  var img = document.getElementById('imghead4');
			  img.onload = function(){
				var rect = clacImgZoomParam(MAXWIDTH, MAXHEIGHT, img.offsetWidth, img.offsetHeight);
				img.width  =  rect.width;
				img.height =  rect.height;
	//                 img.style.marginLeft = rect.left+'px';
				img.style.marginTop = rect.top+'px';
			  }
			  var reader = new FileReader();
			  reader.onload = function(evt){img.src = evt.target.result;}
			  reader.readAsDataURL(file.files[0]);
		  }
		  else //兼容IE
		  {
			var sFilter='filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale,src="';
			file.select();
			var src = document.selection.createRange().text;
			div.innerHTML = '<img id=imghead4>';
			var img = document.getElementById('imghead4');
			img.filters.item('DXImageTransform.Microsoft.AlphaImageLoader').src = src;
			var rect = clacImgZoomParam(MAXWIDTH, MAXHEIGHT, img.offsetWidth, img.offsetHeight);
			status =('rect:'+rect.top+','+rect.left+','+rect.width+','+rect.height);
			div.innerHTML = "<div id=divhead style='width:"+rect.width+"px;height:"+rect.height+"px;margin-top:"+rect.top+"px;"+sFilter+src+"\"'></div>";
		  }
		}
		function clacImgZoomParam( maxWidth, maxHeight, width, height ){
			var param = {top:0, left:0, width:width, height:height};
			if( width>maxWidth || height>maxHeight ){
				rateWidth = width / maxWidth;
				rateHeight = height / maxHeight;

				if( rateWidth > rateHeight ){
					param.width =  maxWidth;
					param.height = Math.round(height / rateWidth);
				}else{
					param.width = Math.round(width / rateHeight);
					param.height = maxHeight;
				}
			}
			param.left = Math.round((maxWidth - param.width) / 2);
			param.top = Math.round((maxHeight - param.height) / 2);
			return param;
		}


		 //图片上传预览    IE是用了滤镜。
		function previewImage5(file)
		{
		  var MAXWIDTH  = 50; 
		  var MAXHEIGHT = 50;
		  var div = document.getElementById('preview5');
		  if (file.files && file.files[0])
		  {
			  div.innerHTML ='<img id=imghead5 onclick=$("#previewImg5).click()>';
			  var img = document.getElementById('imghead5');
			  img.onload = function(){
				var rect = clacImgZoomParam(MAXWIDTH, MAXHEIGHT, img.offsetWidth, img.offsetHeight);
				img.width  =  rect.width;
				img.height =  rect.height;
	//                 img.style.marginLeft = rect.left+'px';
				img.style.marginTop = rect.top+'px';
			  }
			  var reader = new FileReader();
			  reader.onload = function(evt){img.src = evt.target.result;}
			  reader.readAsDataURL(file.files[0]);
		  }
		  else //兼容IE
		  {
			var sFilter='filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale,src="';
			file.select();
			var src = document.selection.createRange().text;
			div.innerHTML = '<img id=imghead5>';
			var img = document.getElementById('imghead5');
			img.filters.item('DXImageTransform.Microsoft.AlphaImageLoader').src = src;
			var rect = clacImgZoomParam(MAXWIDTH, MAXHEIGHT, img.offsetWidth, img.offsetHeight);
			status =('rect:'+rect.top+','+rect.left+','+rect.width+','+rect.height);
			div.innerHTML = "<div id=divhead style='width:"+rect.width+"px;height:"+rect.height+"px;margin-top:"+rect.top+"px;"+sFilter+src+"\"'></div>";
		  }
		}
		function clacImgZoomParam( maxWidth, maxHeight, width, height ){
			var param = {top:0, left:0, width:width, height:height};
			if( width>maxWidth || height>maxHeight ){
				rateWidth = width / maxWidth;
				rateHeight = height / maxHeight;

				if( rateWidth > rateHeight ){
					param.width =  maxWidth;
					param.height = Math.round(height / rateWidth);
				}else{
					param.width = Math.round(width / rateHeight);
					param.height = maxHeight;
				}
			}
			param.left = Math.round((maxWidth - param.width) / 2);
			param.top = Math.round((maxHeight - param.height) / 2);
			return param;
		}